I've been using Blender for years. This is my first time to experience it on a 2in1 PC (HP Pavilion x360). This machine has a pen which works perfectly in any app except Blender.
Whenever I tap the screen with the pen on a surface to paint (in UV/Image Editor or 3D View, no matter), it just doesn't start. When I drag the pen a little bit, then it starts drawing. Interestingly, the distance between the point I click and the point it starts drawing seems equal to length of the radius which appears in Win10 when holding pen to emulate right-click. I disabled holding option for right-click but the problem still exists. (This happens also when sculpting or painting weights.)
In Krita or GIMP, I don't experience this kind of issue. It just starts painting the moment I touch the stylus on screen.
I really want and prefer to use this pen in Blender rather than a mouse. How can I solve this problem? Can I decrease or totally disable required length of dragging that tells the system I'm not holding? (as I said disabling it in Control Panel doesn't work.) Or is there any way to make Win10 to treat Blender's window as in Krita's or GIMP's?